Amplifying - switching devices "Arctur-001-stereo", "Arctur-002-stereo" and "Arctur-101-stereo" since 1976 produced the Berd radio plant. UCU '' Arcturus '' is intended for high-quality reproduction of musical programs from tape recorders, EPU, tuners, microphones, etc. Amplifiers are protected against overloading of output transistors, while high-end models have arrow indicators for output signals, high and low frequency filters for narrowing the frequency band, and filters for 'presence'. Models of the highest class are made on transistors, the first on transistors and integrated circuits. The nominal output power of the Arctur-001 stereo amplifier is 25 W, the Arctur-002 stereo is 15 W, and the Up-101 stereo is 10 W, the maximum is 35, 25 and 15 W. The frequency band of high-end models is 20 ... 20000 Hz. The nonlinear distortion factor is 0.7. It is powered by an alternating current network of 127 or 220 V. The dimensions of the top-class models are 110x526x310 mm, the first class is 110x500x320 mm. Weight 14 kg. UCU designed for work with acoustic systems 15ÐС-1 and 25ÐС-2. The first one is designed for a rated power of 15 W, maximum 25 W, it has 2 heads of type 6ГД-6, one 6ГД-11. The band of its working frequencies is 63 ... 20000 Hz, dimensions 400x240x175 mm, weight 8 kg. The second speaker is designed for a power input of 25 watts, maximum 35 watts. It is installed on the head 25GD-26, 10GD-33 and 3GD-31. There is a frequency response correction in the range of 500 ... 5000 Hz. Switches the frequency response buttons on the front panel. Operating frequency band 40 ... 20000 Hz. Dimensions 25ÐС-2 - 480Ñ…286Ñ…250 mm, weight 12 kg. From the beginning of 1976, the Tac-101-stereo UCU was produced at the Zaporozhye plant Radiopribor in all the same UCU Arctur-101-stereo.